X.25 calls and data transmissions from devices connected to the Passport unit are sent across the frame relay WAN. The X.25 data is encapsulated according to FRF3.1 (Frame Relay Forum, June 22, 1995) and ANSI T1.617a 1994 Annex G. One frame relay DLCI handles all X.25 calls between the unit and the X.25 devices connected to the FRAD. A FRAD typically operates as a DTE. In this case, you must configure the unit to operate as an X.25 DCE.
For this application, you must configure the physical ports on the unit for X.25 services. Also, you must establish a PVC between the Passport unit and the FRAD. And, you must configure virtual ports to handle the X.25 connections across the WAN.
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